Snort mailing list archives
RE: Snort hardware issues
From: agetchel () kde state ky us
Date: Wed, 13 Jun 2001 16:09:36 -0400
Hi Paul, Snort is not multithreaded and will not be multithreaded (according to the developers), so it _will not_ take advantage of multiple processors. There is no portable threading library that would allow Snort to be ported to the numerous OS's it currently runs on, so the decision was made to keep portability as a trade-off for SMP capabilities. IMHO, this is a good thing. The load the system is under _could_ have something to do with the unresponsiveness of the system, but it shouldn't be so loaded that it can't respond to ICMP traffic. Something else seems to be the issue here... Thanks, Abe Abe L. Getchell - Security Engineer Division of System Support Services Kentucky Department of Education Voice 502-564-2020x225 E-mail agetchel () kde state ky us Web http://www.kde.state.ky.us/
-----Original Message----- From: Sheahan, Paul (PCLN-NW) [mailto:Paul.Sheahan () priceline com] Sent: Wednesday, June 13, 2001 3:48 PM To: 'Snort-users () lists sourceforge net' Subject: [Snort-users] Snort hardware issues I have a couple of technical hardware questions related to Snort that I was hoping someone could answer? 1. I am running a Snort server on a Compaq DL360 running Red Hat Linux 7.0. The DL360 has 2 CPU's which don't seem to be getting utilized by Snort. Does Snort support using 2 CPU's? When I use the TOP command, it shows one CPU as pegged at 99.8% utilitzation, then the 99.8% jumps over to the 2nd CPU and the first CPU becomes idle. The utilization pegs on both CPUs back and forth. Is this normal? Can this be throttled somehow so I can get in and manage the box easier without it being so sluggish? 2. Also I have 2 NICs in the box, one is used for gathering the data (it is on a spanned port on a switch) and the other NIC I use for management. Every time I try and log in, the server does NOT respond. If I do a traceroute on both interfaces they don't respond for maybe 10 or 20 traces, then they pop up. Then I QUICKLY open an ssh session and I'm in from there. If I do an IFCONFIG, the 2nd NIC I plan to use for management shows NO activity, though it is active and I can log in through it. Something definitely wrong here. I wonder if the pegged CPU utilitization has something to do with the lack of response? I can't think of a reason why the 2nd NIC would have no activity though. Any technical gurus out there that might have some ideas? Thanks! Paul _______________________________________________ Snort-users mailing list Snort-users () lists sourceforge net Go to this URL to change user options or unsubscribe: http://lists.sourceforge.net/lists/listinfo/snort-users Snort-users list archive: http://www.geocrawler.com/redir-sf.php3?list=snort-users
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Current thread:
- Snort hardware issues Sheahan, Paul (PCLN-NW) (Jun 13)
- Re: Snort hardware issues Erek Adams (Jun 13)
- <Possible follow-ups>
- RE: Snort hardware issues agetchel (Jun 13)